Heel-breast-trimming machine.



D. E. QUINLAN.

HEEL BREAST TRIMMING MACHINE.

APPLICATION FI'LED JULY 3.1916.

' Patented Feb. 4, 1919.

sa rena" onion.

DANIEL E. QUINLAN, 0F STONEHAM, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGN- MEN'IS, T0 UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY,

A CORPORATION OF NEW JERSEY.

HIEEL-BREAST-TRIMMING MACHINE.

To all whom it may concern:

Be it known that I, DANIEL E. QUINLAN, a citizen of theUnited States, residing at Stoneham, in the county of Middlesex and State of Massachusetts, have invented certain Improvements in Heel-Breast-Trlmming Machines, of which the following clescription, in connection with the accompanying drawlngs, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines having rotary cutters for. trimming parts of boots and shoes and particularly to machines for trimming the heel breasts. In the use of machines of this type, for example, the machine shown and described in United States Letters Patent No. 784,340, granted March 7, 1915, on application of Benjamin F. Mayo,

the shoe is held by the operator against a shoe support or rest to position the shoe rel atively to the cutter, and the rest is raised to carry the shoe across the field of operatlon of a rotary cutter to form the heel breast.

This operation is effected by movement of a foot treadle and takes place very quickly. 7 In the operation of such machines it is found that as the cutter leaves the heel on the lower or finished side of the cut it is apt to make a ragged edge, the cutter not having time during the quick movement of the heel across it to make a clean cut. This objectionable efiect is particularly noticeable when the heel as a whole or in part is composed of leatherboard or similar material instead of leather. The object of this invention is to provide means for so effecting this operation that a clean cut will be made by the cutter as the relative movement of the heel and cutter causes them to separate when the cut is completed.

A feature of the invention consists in.

means for retarding the relative movement of the shoe and cutter during the later portion of the cutting operation so that the cutter may effect a clean cut. As shown herein, the shoe positioning device or rest is provided with means for slowing down its movement during the later portion of the movement of the heel across the cutter, said means comprising a yielding element, for example, a spring which comes intooperat1on at a given point in the movement of the Specification of Letters Patent.

Patented Feb. 4, 1919.

Application filed July 3, 1916. Serial No. 107,430.

rest, preferably just prior to the separation of the heel and cutter, and causes the shoe to pause in its movement until the operator exerts additional pressure to carry the shoe farther and finish the cut. Preferably means is provided for varying the point at which the yielding means becomes effective to retard the cutting operation.

The novel features and advantages of the invention will appear more fully from the following detailed description when read in connection with the accompanying drawings and .will be pointed out in the claims.

The'figure of the drawing is a perspective view of a heel breast trimming machine of the type disclosed in the patent referred to above equipped with my invention.

The machine comprises a base 2 from which rises a column 4 having at the top bearing for a shaft 6 which carries a rotary cutter 8 for trimming a heel breast. The work positioning means or rest is carried on a vertical longitudinally movable rod 10 which is splined in a longitudinal bearing in a member 11 and is jointed at 12 to a connecting rod 14. The connecting rod 14 is jointed at 16 to a treadle 18, pivoted at 20, through movement of which the rod 10 may be moved vertically. The work positioning means is fixed to the upper end of the rod 10 and comprises a head 22 having two upstanding portions 24, 26. The part 24 carries a plate 28 against which the tread face of the heel of the shoe is held by the operator with the breast edge ofthe top lift against a rib 30 on the plate 28. The tread face of the forepart of the shoe is rested against the part 26 which is adjustable to vary its relation to the plate 28 to enable shoes having various heights of heels and lasts of different spring to be positioned with the tread faces of their heels squarely against the plate 28. For this purpose the part 26 is provided with a stem. 32 which passesthrough a hole in an arm 34 on the head 22 and is held in adjustedposition by a clamp screw 36. The head 22 1s rotatively As shown, the member 11 is arranged for lateral adjustment in a direction parallel to the shaft 6 by means of a dove-tailed portion 88 thereof which slides in a correspondinglyformed groove in a projection 40 of a member 41 which is secured to the machine frame. A screw having a hand wheel 12 is provided for effecting this adjustment and a set screw 4:4: is provided to firmly hold the parts in adjusted position. The member 10, by means of slot and screw connection to the machine frame, may be adjusted to vary the depth of cut or amount of material removed from the heel breast.

On the rod 10 is threaded a flanged collar 50, the flange being knurled to facilitate rotation of the collar to adjust it vertically on the rod. Arranged on the collar with itslower end resting on the flange is a spring 52 within the upper end of which .is fitted a sliding collar 54: havinga flange 56 against which the upper end of the spring 52 rests.

In the operation of the machine the operator holds a shoe in his hand with the tread face of the heel pressed against the plate 28, with the breast edge of the top liftagainst the rib 30, and with the bottom of the forepart against the part 26. The shoe is now supported with its longitudinal median plane parallel with the cutter shaft. The-operator then depresses the outer end of the treadle to move the rod 10 upwardly which moves the shoe on its positioning means past the cutter 8 which removes the required amount of material from the breast face of the shoe. As the out is about to be finished the sliding collar 54 engages the lower face of the bearing member 11 checki-ngthe upward movement of the shoe but permitting the cut to be finished by compression of the spring 52. Since the operator has to effect the finishing movement of the shoe against the resistance of the spring 52, the'shoe is caused to pause in its upward movement as the finishing portion of the cut is reached and this portion of the cut is effected more slowly than the'pri'or portion of the cut with the result that the cutter has time to remove the stock during thefinishing portion of its action and makes a clean finishing cut.

As described, the sleeve 50 is threadedon the rod 10 and hence the operator, by turning the sleeve, may adjust the position of the spring on the rod and thereov vary the point during the passage of the shoe heel across the cutter at which the spring will become effective to reduce the rate of movement of the shoe and give the cutter time to make a clean cut. 7

Having fully described the invention, what is claimed as new and desired to be secured by United 'States'Letters'Patent is: 1. In a machine of the class described,

the combination with a rotary cutter, a work support, and means for moving relatively the cutter and the work support to effect a cutting operation upon the work, of means for causing the later portion only of said relative movement to be effected more slowly than the other portions of said movement.

2. In a machine of the class described, the combination of a rotary cutter, a work support, manual means for effecting relative movement of the cutter and the work support, and means for suddenly increasing the resistance to said relative movement during the later portion of such movement to retard'the movement and cause the cutter to effect a clean cut as the work and cutter separate.

8. In a machine of the class described, the combination of a rotary cutter, a work support, 'manual means for effecting relative movement of the cutter and the work support, yielding means coming into operation during the later portion of the cutting operationto slow down said relative movement and cause the cutter to effect a clean cut as the cutter and work support separate,

and means'for varying the point in the relative movement ofthe work support and cutter at which the yielding means becomes effective.

4. A machine of the class described having, in combination, a rotary cutter having a fixed axis, a shoe support constructed and arranged to position the shoe with its longitudinal median plane parallel with the axis of the cutter, means for moving the shoe support to carry the heel breast of the shoe across the cutting face of the cutter, and means for increasing the resistance to movement of the shoe support only as the heel is about to leave the cutter, whereby the movement of the support during the later,

or finishing portion of its'cut is effected more slowly than the other portions of the out.

5. A machine of the class described having, in combination, a rotary cutter having a horizontal axis, a shoe support constructed and arranged to position the shoe with its longitudinal median plane horizontal, means for moving the shoe support vertically to carry the heel breast of the shoe across the acting face of the cutter, and a spring on said support arranged to'be compressed only during the finishing portion of the cut to cause the movement of the support to be slowed down during that portion of the cut.

6. In a machine of the class described, the combination of a rotary cutter, a work support, means for effecting relative movement the resistance to relative movement of the cutter and Work support diminishes at the completion of the cut to increase the resistance to relative movement.

7. In a machine of the class described, the combination of a rotary cutter, a Work support, means for effecting relative movement of the cutter and the Work support to effect a cutting operation upon a portion of the Work, and means becoming eflective dur- Oopies of this patent may be obtained ior ing the later portion of said relative movement and during operation of the cutter to cause the later portion of said cutting opera tion to be effected at a difierent rate from that at which the first portion of said cutting operation is effected.

In testimony whereof I have signed my name to this specification.

DANIEL E. QUINLAN.

five cents each, by addressing the Gommissioner of Patents, Washington, D. G. 

